JP2015022943A - Illumination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination system capable of flexibly performing linkage control of an ambient illuminating device and a task illuminating device without being restricted by an installation position of the task illuminating device.SOLUTION: An illumination system comprises: a plurality of task illuminating devices 20a-20d provided with markers 21a-21d optically detectable from above; an ambient illuminating device 16 illuminating the whole of a work space as a target; an imaging part 14 for imaging the markers 21a-21d; and a controller 12 connected with the task illuminating devices 20a-20d, the ambient illuminating device 16, and the imaging part 14 via a communication path 18, acquiring from the imaging part 14 an image in which the markers 21a-21d are captured, recognizing positions of the task illuminating devices 20a-20d in the work space on the basis of the acquired image, and controlling the ambient illuminating device 16 on the basis of the recognized position.

Description

  The present invention relates to an illumination system including a task illumination device that illuminates a user's work area and an ambient illumination device that illuminates the entire space including the work area.

  Task and ambient lighting systems are attracting attention as lighting systems aimed at energy saving in offices and the like. In this lighting system, work areas (for example, desk surfaces) of individual users who work in the office are provided not only in ambient lighting devices such as ceiling lighting devices that illuminate the entire office floor, but also in close proximity. Illuminate even with task lighting devices such as desk lamps. Thereby, energy saving is achieved by reducing the number or light quantity of ambient lighting devices (see, for example, Patent Document 1).

  In the lighting system of Patent Document 1, a plurality of ambient lighting devices and a plurality of task lighting devices are provided. Then, for each of the plurality of ambient illumination areas formed by the plurality of ambient lighting devices, the ambient lighting device and the task lighting device are independently linked to control the light output.

JP 2010-257755 A

  However, in the conventional lighting system, the installation position of the task lighting device needs to be fixed. That is, in the conventional lighting system described above, independent lighting control is performed for each ambient lighting area on the assumption that each of the plurality of ambient lighting areas and each installation position of the plurality of task lighting devices are associated in advance. Is done.

  For this reason, in the conventional lighting system, it is not allowed to add task lighting devices, reduce the number of units, or move the installation position after building the lighting system, or use a large control program. There is a problem of being forced to change and lacking flexibility.

  Therefore, the present invention has been made in view of such a problem, and lighting that can flexibly perform interlock control between the ambient lighting device and the task lighting device without being restricted by the installation position of the task lighting device. The purpose is to provide a system.

  In order to achieve the above object, one embodiment of a lighting system according to the present invention is a plurality of task lighting devices that illuminate respective work areas of a plurality of users, each of which is optically detectable from above. A plurality of task lighting devices provided with markers, an ambient lighting device installed above the plurality of task lighting devices and illuminating the entire space including the work areas of the plurality of users, and the plurality of the lighting devices An imaging unit that is installed above the task lighting device and captures a marker provided in the plurality of task lighting devices, and is connected to the plurality of task lighting devices, the ambient lighting device, and the imaging unit via a communication path The image obtained by imaging the marker is acquired from the imaging unit via the communication path, and the plurality of the spaces in the space are acquired based on the acquired image. Recognizes the position of the disk illumination device, on the basis of the recognized the position, and a control unit for controlling the ambient lighting device.

  Here, the ambient lighting device includes a light source that illuminates in an independent illumination state for each of a plurality of divided spaces obtained by dividing the space, and the control unit is positioned based on at least the image. The ambient lighting device may be controlled such that a work area illuminated by the task lighting device that can recognize the light is illuminated by the ambient lighting device.

  Further, the illumination state may be at least one of a light amount and a color temperature in illumination by the ambient illumination device to the divided space.

  In addition, the markers provided in the plurality of task lighting devices have an aspect that is optically different for each of the plurality of task lighting devices, and the control unit includes each of the plurality of task lighting devices and the task. By associating with the mode of the marker provided in the lighting device, the plurality of task lighting devices are identified, the respective positions of the plurality of task lighting devices are recognized, and the recognized plurality of task lighting devices are recognized. You may perform the said control based on each position of an apparatus.

  In addition, the marker provided in each of the plurality of task lighting devices may emit light instructed by the control unit as the optically different aspect.

  Moreover, the marker provided in each of the plurality of task lighting devices may be composed of a plurality of LEDs that emit different colors.

  Each of the plurality of task lighting devices transmits information indicating a use state of the task lighting device to the control unit via the communication path, and the control unit includes any one of the plurality of task lighting devices. When the information indicating the use state is received from the above, depending on the received information, the lighting state by the ambient lighting device to the region including the work area illuminated by the task lighting device may be adjusted.

  Further, the imaging unit further images at least one of the plurality of users, and the control unit further determines an action of the user included in the image acquired from the imaging unit, and depends on the determined action The lighting condition by the ambient lighting device for the area including the user may be adjusted.

  Each of the plurality of task lighting devices further includes a microphone, and transmits information on sound detected by the microphone to the control unit, and the control unit further includes any one of the plurality of task lighting devices. When information on the sound detected by the microphone is received, depending on the received information, the lighting state by the ambient lighting device in the area including the work area illuminated by the task lighting device may be adjusted.

  In addition, the control unit further detects a usage state of the information device used by at least one of the plurality of users, and depending on the detected usage state of the information device, the control unit is directed to an area including the work area of the user. The lighting state by the ambient lighting device may be adjusted.

  Note that the present invention can be realized not only as a lighting system but also as a control method by a control unit included in the lighting system. Further, the control method can be realized as a program for causing a computer to execute the control method. Further, it can be realized as a recording medium such as a computer-readable CD-ROM in which the program is recorded.

  According to the present invention, a task-and-ambient lighting system that can flexibly perform interlock control between the ambient lighting device and the task lighting device without being restricted by the installation position of the task lighting device is realized.

  Therefore, in today where energy saving is required, the practical value of the present invention is extremely high.

The block diagram which shows the structure of the illumination system in embodiment of this invention The figure which shows the imaging example (image) of the marker by the imaging part in the illumination system The figure which shows the example of the various aspects of the marker (A) is a figure which shows the structural example of the marker which can be set to various colors, (b) is a figure which shows the aspect (three cases) of the lamp upper surface in which the marker was provided. The figure which shows the example of an imaging (image) by the imaging part at the time of setting each of the marker of the four task lighting apparatuses in the lighting system to a different color Communication sequence diagram showing interaction between task lighting device and control unit in the lighting system The figure which shows the example of the data table hold | maintained at the control part in the lighting system Diagram showing how colors are assigned to markers The figure which shows the illumination range by the ambient illuminating device in the illumination system The flowchart which shows the example of control of the ambient illuminating device linked with the user's action The figure which shows a mode that an ambient illuminating device is controlled in conjunction with a user's action. The figure which shows a mode (state following FIG. 10A) that an ambient lighting apparatus is controlled in response to a user's action. Communication sequence diagram showing exchanges between task lighting device, control unit and ambient lighting device The figure which shows a mode that an ambient lighting device is controlled in conjunction with a task lighting device Flowchart showing a control example of a task lighting device and an ambient lighting device linked to user actions The figure which shows a mode that a task lighting apparatus and an ambient lighting apparatus are controlled in response to a user's action. External view of task lighting device with microphone The figure which shows the example of a display of the personal computer which a user uses

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. The numerical values, shapes, components, arrangement positions and connection forms of components, steps, order of steps, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. The invention is specified by the claims. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

  FIG. 1 is a block diagram showing a configuration of a lighting system 10 according to an embodiment of the present invention. The illumination system 10 is a task-and-ambient illumination system, and includes a control unit 12, an imaging unit 14, an ambient illumination device 16, and a plurality (four in this case) of task illumination devices 20a to 20d.

  The task lighting devices 20a to 20d are devices that illuminate the work areas of a plurality of users (hereinafter, the lighting by the task lighting device is also referred to as “task lighting”). is there. Each of these task lighting devices 20a to 20d includes markers 21a to 21d that can be optically detected from above (upward in the vertical direction), operation units 22a to 22d such as buttons for operating the task lighting device, and LEDs. Task illumination light sources 23a to 23d.

  The task lighting devices 20a to 20d control information indicating the use state (illumination on / off, light quantity, color temperature, etc.) of the task lighting device detected by a sensor (not shown) via the communication path 18. Can be transmitted to the unit 12. The markers 21a to 21d can be controlled by the operation units 22a to 22d or the control unit 12 so as to be optically different from one another. For example, the markers 21 a to 21 d are composed of a plurality of LEDs that emit different colors, and emit light of a color designated by the control unit 12.

  The ambient lighting device 16 is installed above the task lighting devices 20a to 20d (for example, the ceiling of the room), and covers the entire space (referred to herein as “work space”) including the work areas of a plurality of users. As a device to illuminate. Note that the illumination by the ambient illumination device 16 is hereinafter also referred to as “ambient illumination”. The ambient illumination device 16 includes an ambient illumination light source 17 including a plurality of LEDs and a control circuit. The ambient illumination light source 17 has a light distribution characteristic in which each of a plurality of divided spaces obtained by dividing the work space is illuminated in an independent illumination state (light quantity, color temperature, etc.). For this purpose, the plurality of LEDs constituting the ambient illumination light source 17 are installed so as to emit light in a direction in which each of the plurality of divided spaces can be illuminated, and are dimmed by a control circuit. In order to adjust the color temperature, for example, the plurality of LEDs are configured by red, green, and blue LEDs, and the control circuit adjusts the light amount of each color LED, and the light of each color is synthesized and emitted.

  The imaging unit 14 is a camera that is installed above the task lighting devices 20a to 20d (for example, the ceiling of the room) and images at least the markers 21a to 21d provided on the task lighting devices 20a to 20d. Visible light or infrared digital camera. In the present embodiment, the imaging unit 14 has a viewing angle set so as to capture each work area associated with the task lighting devices 20a to 20d and a user in the vicinity thereof.

  The communication path 18 is a transmission path that connects the control unit 12, the task lighting devices 20 a to 20 d, the ambient lighting device 16, and the imaging unit 14. For example, the communication path 18 is a transmission path corresponding to communication by PLC (Power Line Communications) or Ethernet (registered trademark). The control unit 12, the task lighting devices 20a to 20d, the ambient lighting device 16, and the imaging unit 14 include a communication adapter for communicating with each other via the communication path 18, but the illustration is omitted in FIG. ing.

  The control unit 12 is a controller that is connected to the task lighting devices 20 a to 20 d, the ambient lighting device 16, and the imaging unit 14 via the communication path 18 and controls these devices via the communication path 18. This control part 12 acquires the image by which the markers 21a-21d were imaged from the imaging part 14, and recognizes the position of task lighting apparatus 20a-20d in space based on the acquired image. Then, the control unit 12 controls the ambient lighting device 16 based on the recognized positions of the task lighting devices 20a to 20d. As a hardware configuration, the control unit 12 includes a CPU (Central Processing Unit), a nonvolatile memory in which a program is stored, a volatile memory that provides a work area for the CPU, an input / output circuit such as a communication adapter, and the like. Is done.

  The main control contents of the control unit 12 are as follows. That is, the control unit 12 has ambient lighting so that the ambient lighting device 16 can illuminate the work area illuminated by the task lighting devices 20a to 20d whose positions can be recognized based on the image acquired from the imaging unit 14. The device 16 is controlled. More specifically, the control unit 12 identifies each of the task lighting devices 20a to 20d by associating the individual task lighting devices 20a to 20d with the modes (for example, colors) of the markers 21a to 21d. Recognize the position of each of the lighting devices 20a to 20d. Then, the ambient lighting device 16 is controlled based on the recognized positions of the task lighting devices 20a to 20d.

  Specifically, when the control unit 12 receives information indicating the use state (or lighting state) from any of the task lighting devices 20a to 20d, the control unit 12 makes an ambient to the corresponding work area depending on the received information. Adjust the lighting. That is, the lighting state by the ambient lighting device 16 to the area including the work area illuminated by the task lighting device is adjusted. For example, when the control unit 12 receives information indicating the color temperature of the lighting from the task lighting device 20a, the control unit 12 refers to the received information, and controls to match the color temperatures of the task lighting and the ambient lighting in the corresponding work area. do. That is, the control unit 12 sets the ambient lighting device 16 so that the color temperature of the illumination by the ambient lighting device 16 on the area including the work area illuminated by the task lighting device 20a matches the color temperature of the lighting by the task lighting device 20a. To control.

  In addition, the control unit 12 further determines a user's action included in the image acquired from the imaging unit 14 and adjusts the lighting state of the area including the user by the ambient lighting device 16 depending on the determined action. . For example, when the user included in the image acquired from the imaging unit 14 has moved and cannot be detected because the user has moved, the control unit 12 uses the ambient lighting device 16 for the divided space corresponding to the user. Control to turn off or turn off the light.

  Next, the details and operation of each elemental technology will be described for the illumination system 10 according to the present embodiment configured as described above.

  First, the details of the markers 21a to 21d provided in the task lighting devices 20a to 20d will be described.

  FIG. 2 is a diagram illustrating an example of imaging (images) of the markers 21 a to 21 d by the imaging unit 14. Here, for convenience of explanation, an example in which only two markers 21a and 21b are captured is shown. This image includes two task lighting devices 20a and 20b, desks 25a and 25b on which they are installed, chairs 26a and 26b, and users 27a and 27b sitting on the chairs 26a and 26b. Here, the marker 21a of the task lighting device 20a is circular, while the marker 21b of the task lighting device 20b is square. Thus, the control part 12 can recognize the position in the work space of task lighting device 20a-20d by setting the shape of a marker so that it may differ for every task lighting device.

  Here, the shape of the marker may be determined, for example, by the shape of a sticker attached to the task lighting device, or may be determined by the shape of the window through which light from the LED is emitted. In order to determine the shape of the marker using the LED, in the task lighting devices 20a to 20d, a plurality of windows having different shapes prepared in advance by manual control via the operation units 22a to 22d or external control from the control unit 12 Is arbitrarily selected from. The selection of the window by external control can be realized, for example, by sliding a single shielding plate formed with a plurality of differently shaped windows on the front surface of the LED by an actuator.

  In addition, as an aspect of the markers 21a-21d made to differ for every task lighting apparatus 20a-20d, it is not restricted to a shape. That is, as shown in FIG. 3, the markers 21a to 21d may be distinguished by their shapes ((a) in FIG. 3), or may be distinguished by characters such as numerals ((b) in FIG. 3). ), And may be distinguished by color ((c) of FIG. 3).

  In addition, when the mode of the markers 21a to 21d is manually set in the task lighting devices 20a to 20d, the task lighting devices 20a to 20d notify the control unit 12 of the mode of the marker set to the own device. Thereby, in the control part 12, matching with the aspect of the markers 21a-21d and task lighting apparatus 20a-20d is performed. For example, it is assumed that the marker 21a of the task lighting device 20a is set to red by manual operation (for example, button operation for setting red) through the operation unit 22a. In this case, the task lighting device 20a detects that the marker 21a is set to red based on the input via the operation unit 22a, and notifies the control unit 12 that the marker of its own device is red. To do. Thereby, since the control part 12 knows that the marker 21a of the task lighting device 20a is red, when a red marker is detected in the image acquired from the imaging part 14, the task is positioned at the position of the red marker. It can be recognized that the lighting device 20a is installed.

  (A) of FIG. 4 is a figure which shows the structural example of the markers 21a-21d which can be set to various colors manually or by the instruction | indication from the control part 12. FIG. Here, a configuration example of the marker 21a provided on the upper surface 24a of the lamp included in the task lighting device 20a (the same applies to the other markers 21b to 21d) is shown. The marker 21a incorporates an LED 28a that emits red light, an LED 28b that emits green light, and an LED 28c that emits blue light. A transparent light diffusion panel 29a is disposed on the upper surface of the marker 21a. With such a configuration, when some or a plurality of LEDs 28a to 28c are lit, the marker 21a emits light with a uniform light emission color determined by the combination of the lit LEDs. FIG. 4B is a diagram showing modes (three cases) of the lamp upper surface 24a when any of the LEDs 28a to 28c constituting the marker 21a emits light. FIG. 5 is a diagram illustrating an imaging example (image) by the imaging unit 14 when the markers 21a to 21d of the task lighting devices 20a to 20d are set to different colors. Here, the marker 21a of the task lighting device 20a is set to red, the marker 21b of the task lighting device 20b is set to green, the marker 21c of the task lighting device 20c is set to blue, and the marker 21d of the task lighting device 20d is It is set to yellow. As described above, even when a plurality of task illumination devices such as eight or sixteen are installed by causing each of the markers 21a to 21d configured by a plurality of light emitting color LEDs to emit light in a single color or a mixed color. , It becomes possible to identify them.

  Next, a method for assigning colors to the markers 21a to 21d by the control unit 12 will be described. Here, a method will be described in which the control unit 12 automatically assigns colors to the markers 21a to 21d of the four task lighting devices 20a to 20d.

  FIG. 6A is a communication sequence diagram showing exchanges between the task lighting devices 20 a to 20 d and the control unit 12 via the communication path 18. FIG. 6B is a diagram illustrating an example of a data table indicating a color assignment state. FIG. 7 is a diagram illustrating how colors are assigned to the markers 21a to 21d.

  Now, as shown in FIG. 7A, in an office where office supplies (desks 25a to 25d, chairs 26a to 26d, task lighting devices 20a to 20d) for four users 27a to 27d are installed, Suppose that an event occurred. That is, it is assumed that one user 27d sits on the chair 26d and turns on the task lighting device 20d installed on his desk 25d (S10 in FIG. 6A). Note that the dotted oval frame shown on the desk 25d of the user 27d represents the illumination area (task illumination area) of the task illumination device 20d (the same applies to other drawings).

  Then, the task lighting device 20d transmits the identification information of the own device (here, the serial number) and the information indicating the state of the own device (here, “lit”) via the communication path 18. (S11 in FIG. 6A).

  Upon receiving the notification, the control unit 12 assigns a color (for example, “red”) to the notified task lighting device 20d in accordance with a predetermined color order (S12 in FIG. 6A), and the assigned color. (Here, “red”) is notified to the task lighting device 20d (S13 in FIG. 6A). The control unit 12 holds a data table as shown in FIG. 6B, and records the serial number notified from the task lighting device and the assigned color in the data table in association with each other. .

  Receiving the notification, the task lighting device 20d controls the marker 21d of its own device so as to emit the color notified from the control unit 12 (here, “red”) (S14 in FIG. 6A). Thereby, the assignment of the marker color to the task lighting device 20d is completed.

  Subsequently, it is assumed that the second user 27c is seated on the chair 26c and turns on the task lighting device 20c installed on his desk 25c (S10 in FIG. 6A). Then, similarly to the case of the first user 27d, the control unit 12 is notified of the serial number of the task lighting device 20c and information indicating “lighting” (S11 in FIG. 6A).

  Upon receiving the notification, the control unit 12 assigns a new color (for example, “blue”) to the task lighting device 20c in accordance with a predetermined color order (S12 in FIG. 6A), and assigns the assigned color (here Then, “blue”) is notified to the task lighting device 20c (S13 in FIG. 6A). Receiving the notification, the task lighting device 20c controls the marker 21c of its own device so as to emit the color (here, “blue”) notified from the control unit 12 (S14 in FIG. 6A). Thereby, the assignment of the marker color to the second task lighting device 20c is completed.

  The same communication procedure is repeated for the third user and the fourth user (S10 to S14 in FIG. 6A). Thereby, finally, different colors are assigned by the control unit 12 to the four task illumination devices 20a to 20d, and the markers 21a to 21d of the four task illumination devices 20a to 20d emit different colors. .

  By such color assignment by the control unit 12, up to the number of types of colors that can be emitted by the marker, the task lighting device can be automatically and without any special operation for a plurality of task lighting devices. Is associated with the marker color. The result of the association is held in the control unit 12 as a data table shown in FIG. 6B. Therefore, the control unit 12 specifies the position of the marker color in the image acquired from the imaging unit 14, and collates the color with the marker color registered in the data table. Thereby, after identifying each of the task lighting devices 20a to 20d, the positions of the task lighting devices 20a to 20d are recognized, and the ambient lighting device 16 is controlled based on the recognized positions of the task lighting devices 20a to 20d. Can do.

  Note that the identification information of the task lighting devices 20a to 20d is not limited to a serial number, and may be any information that can identify individual task lighting devices such as a communication address.

  Next, the illumination range to the work area of each user by the ambient lighting device 16 will be described.

  FIG. 8 is a diagram illustrating an illumination range by the ambient illumination device 16. In this figure, the illumination ranges 30a-30d by the ambient illumination device 16 are indicated by dotted line frames. In the present embodiment, the four illumination ranges 30a to 30d are set to areas that do not interfere (do not overlap) corresponding to four work areas that are known in advance. Such setting of the illumination range is such that the light distribution directions of the plurality of LEDs constituting the ambient illumination light source 17 are such that the illumination distribution by the ambient illumination light source 17 included in the ambient illumination device 16 becomes the four illumination ranges 30a to 30d. This is realized by setting. Alternatively, it is realized by providing a plurality of LEDs that illuminate every direction in the work space and emitting only the LEDs that illuminate a specific illumination range from among the plurality of LEDs.

  For example, the ambient lighting device 16 includes a structure in which the illumination range can be arbitrarily set manually so as to illuminate various illumination ranges. Specifically, the ambient illumination light source 17 included in the ambient illumination device 16 is configured by a group of a plurality of light sources that are movably fixed so that the illumination direction can be changed, and the illumination directions of the plurality of light sources are manually set in advance. It has a structure that can be set with. Therefore, the illumination range by the ambient lighting device 16 can be set to any number, shape, and area within a certain range, depending on the population density in the office and the performance of the ambient lighting device 16 (light quantity, control resolution, etc.). Can be set flexibly.

  Next, a control example of the ambient lighting device 16 linked to the user's action will be described.

  FIG. 9 is a flowchart illustrating a control example of the ambient lighting device 16 in conjunction with the user's action. 10A and 10B are diagrams illustrating a state in which the ambient lighting device 16 is controlled in conjunction with the user's action.

  The control unit 12 analyzes the image acquired from the imaging unit 14 so that, for each color of the different marker, within a certain distance from the marker position (or a predetermined constant shape including the upper surface of the lamp having the marker). It is determined whether there is a user in the work area (S20 in FIG. 9). The presence / absence of the user is determined, for example, by performing contour extraction and pattern matching on the image to determine whether or not an object having a pre-registered shape (a typical human shape viewed from above) exists in the image. .

  As a result, when it is determined that the user exists (Yes in S20 in FIG. 9), the control unit 12 causes the ambient lighting device 16 to illuminate the work area (divided space) corresponding to the user. The illumination device 16 is controlled (S21 in FIG. 9). For example, as shown in FIG. 10A, it is assumed that four users are present in the office and the four task lighting devices 20a to 20d are lit. In this case, under the control of the control unit 12, the ambient lighting device 16 illuminates four work areas (ambient lighting areas 1 to 4) corresponding to the four users 27 a to 27 d (ambient lighting is performed). Light.

  On the other hand, if it is determined that the user does not exist (No in S20 of FIG. 9), the control unit 12 causes the task lighting device and the ambient light so that the task lighting and the ambient lighting corresponding to the user are turned off or dimmed. The illumination device 16 is controlled (S22 in FIG. 9). For example, as shown in FIG. 10B, when the user 27d leaves, the task lighting device 20d corresponding to the user 27d is turned off or dimmed, and the ambient lighting device 16 is operated in the work area (ambient) corresponding to the user 27d. Lighting area 1) is turned off or dimmed.

  The above process is repeated at regular time intervals.

  Such control in conjunction with the user's action eliminates the need to operate the ambient lighting device 16 and avoids unnecessary lighting, thereby saving energy.

  Next, a control example of the ambient lighting device 16 interlocked with the task lighting devices 20a to 20d will be described.

  FIG. 11 is a communication sequence diagram showing exchanges between the task lighting devices 20a to 20d, the control unit 12, and the ambient lighting device 16 via the communication path 18. FIG. 12 is a diagram illustrating how the ambient lighting device 16 is controlled in conjunction with the task lighting devices 20a to 20d.

  When the lighting state (for example, color temperature) of the task lighting devices 20a to 20d is adjusted via the operation units 22a to 22d of the own device (S40 in FIG. 11), the lighting state after the adjustment (for example, color temperature) Is transmitted to the control unit 12 (S41 in FIG. 11). The control unit 12 that has received the information specifies the color of the marker of the source task lighting device by referring to the data table shown in FIG. 6B. Then, by collating the identified color with the color of the marker in the image acquired from the imaging unit 14, the work area (divided space) corresponding to the task illumination device that is the transmission source is identified (S42 in FIG. 11). Subsequently, the control unit 12 notifies the ambient lighting device 16 of information indicating the position of the identified work area (divided space) and information indicating the lighting state (for example, color temperature) received from the task lighting device. (S43 in FIG. 11). Receiving the information, the ambient lighting device 16 adjusts the lighting of the ambient lighting light source 17 so as to illuminate the notified work area (divided space) with the notified lighting state (for example, color temperature) (FIG. 11 S44).

  As a result, for example, as shown in FIG. 12, in each of the four work areas (ambient illumination areas 1 to 4), the color temperature of the task illumination and the color temperature of the ambient illumination are the same value (or close values). Set to Therefore, only by the user adjusting the lighting state of the task lighting device, the lighting state by the ambient lighting device 16 that illuminates the user's work area is automatically adjusted. In this example, the color temperature in the task lighting and the color temperature in the ambient lighting are adjusted to be substantially the same, the comfort of the lighting space is increased, and the user's concentration is also increased in a high color temperature environment.

  Next, a control example of the task lighting devices 20a to 20d and the ambient lighting device 16 in conjunction with the user's action will be described.

  FIG. 13 is a flowchart illustrating a control example of the task lighting devices 20a to 20d and the ambient lighting device 16 in conjunction with the user's action. FIG. 14 is a diagram illustrating a state in which the task lighting devices 20a to 20d and the ambient lighting device 16 are controlled in conjunction with a user action.

  The control unit 12 analyzes the image acquired from the imaging unit 14 to determine whether the users are having a conversation (communication) (S50 in FIG. 13). Whether or not the users are having a conversation is determined based on whether or not the user's position in the image is closer than a predetermined distance as shown in FIG.

  As a result, when it is determined that the users are having a conversation (Yes in S50 of FIG. 13), the control unit 12 performs task lighting on the work area (divided space) corresponding to the users having a conversation. And control to make the color temperature of the ambient illumination the same. That is, the control unit 12 controls the task lighting device and the ambient lighting device 16 so that the task lighting device and the ambient lighting device 16 illuminate at the same color temperature (S51 in FIG. 13). In the example shown in FIG. 14, since it is determined that the user 27c and the user 27d are talking, the color temperatures of the task lighting and the ambient lighting corresponding to the two users 27c and 27d are adjusted to be the same. . That is, the color temperature of the illumination by the task illumination devices 20c and 20d is the same as the color temperature of the illumination by the ambient illumination device 16 for the work areas (ambient illumination areas 1 and 2) corresponding to the two users 27c and 27d. Adjusted to For example, the color temperature of the illumination by the task illumination devices 20c and 20d immediately before is unified to a high color temperature.

  By such control linked to the user's action, a sense of unity in the space is produced and conversation (communication) is promoted.

  Note that whether or not the users are having a conversation may be determined not only by image analysis but also by sound input to the microphone. FIG. 15 is an external view of a task lighting device 20a including the microphone 32a (the same applies to the other task lighting devices 20b to 20d). When the task lighting device 20a detects the voice input from the microphone 32a, the task lighting device 20a recognizes that the user using the device has started a conversation, and notifies the control unit 12 that the user is talking. Upon receiving the notification, the control unit 12 uses the plurality of task lighting devices when receiving a notification that the conversation is in progress from a plurality of task lighting devices installed in adjacent positions. Recognize that users are having a conversation.

  As described above, when the control unit 12 receives information on the sound detected by the microphone from any of the plurality of task lighting devices, the control unit 12 includes a work area that the task lighting device illuminates depending on the received information. The lighting condition by the ambient lighting device 16 for the area can be adjusted.

  Further, whether or not the users are having a conversation may be determined not only by image analysis and voice recognition, but also by the use state of an information device such as a personal computer (PC) used by the user. FIG. 16 is a diagram illustrating a display example of the personal computer 35a used by the user. Here, the user 27d concentrates on dialogue with other users, and since the personal computer 35a has not been operated for a certain time or longer, the screen saver is activated in the personal computer 35a and the screen saver screen is displayed. Yes. The control unit 12 monitors whether or not the screen saver is activated in each user's personal computer 35 a via the communication path 18. When the control unit 12 detects that the screen savers of the plurality of personal computers 35a installed adjacent to each other are activated, the users using the plurality of personal computers 35a are having a conversation. recognize.

  As described above, the control unit 12 detects the usage state of the information device used by at least one of the plurality of users, and depending on the detected usage state of the information device, the ambient to the area including the work area of the user is detected. The lighting state by the lighting device 16 can be adjusted.

  Even with such a detection method, a sense of unity in the space is produced by control linked to the user's action, and conversation (communication) is promoted.

  As described above, according to the illumination system 10 in the present embodiment, the task illumination devices 20a to 20d are provided with markers that are optically detectable from above. Then, the control unit 12 recognizes the positions of the task lighting devices 20a to 20d in the work space based on the image acquired from the imaging unit 14, and controls the ambient lighting device 16 based on the recognized position. Thereby, even if it is a case where the installation position of task lighting apparatus 20a-20d is changed, control of the ambient lighting apparatus 16 depending on the installation position of task lighting apparatus 20a-20d is attained. Therefore, it is possible to flexibly perform the interlock control between the ambient lighting device 16 and the task lighting devices 20a to 20d without being restricted by the installation positions of the task lighting devices 20a to 20d.

  In addition, the ambient illumination device 16 includes an ambient illumination light source 17 that illuminates each of a plurality of divided spaces obtained by dividing the work space in an independent illumination state. And the control part 12 is ambient so that the work area illuminated by the task lighting apparatuses 20a-20d which could recognize the position based on the image acquired by the imaging part 14 at least is illuminated by the ambient lighting apparatus 16. The lighting device 16 is controlled. Thus, when the work area is illuminated by the task lighting device, the work area is automatically illuminated also by the ambient lighting device, and the user does not need to operate the ambient lighting device.

  Here, the illumination state is at least one of the light amount and the color temperature in the illumination by the ambient illumination device 16 for the divided space. As a result, for the illumination by the task illumination device and the illumination by the ambient illumination device, cooperative control is performed so that at least one of the light amount and the color temperature has a predetermined relationship. Therefore, the lighting environment can be controlled more dynamically, and various functions can be provided to the user by changing the lighting space.

  In addition, the markers 21a to 21d provided on the task lighting devices 20a to 20d have an optically different aspect for each of the task lighting devices 20a to 20d. For example, the markers 21a to 21d are composed of a plurality of LEDs that emit different colors, and emit the colors designated by the control unit 12 as optically different modes. The control unit 12 associates each of the task lighting devices 20a to 20d with the mode of the markers 21a to 21d to identify each of the task lighting devices 20a to 20d, and then positions each of the task lighting devices 20a to 20d. Recognize And the control part 12 performs the said control based on each position of the recognized task lighting apparatus 20a-20d. Thereby, the interlocking control according to the use state of each task lighting apparatus 20a-20d is attained, and a comfortable task and ambient lighting environment is implement | achieved.

  As a specific aspect, each of the task lighting devices 20 a to 20 d transmits information indicating the usage state of the task lighting device to the control unit 12 via the communication path 18. And the control part 12 will receive ambient lighting to the area | region containing the work area which the said task lighting apparatus illuminates depending on the received information, if the information which shows a use condition is received from any of task lighting apparatus 20a-20d The lighting state by the device 16 is adjusted. Thereby, the illumination control by the ambient lighting device 16 depending on the use state of the task lighting device becomes possible.

  The imaging unit further images at least one of the plurality of users. And the control part 12 determines the user's action contained in the image acquired from the imaging part 14, and adjusts the illumination state by the ambient lighting apparatus 16 to the area | region containing a user depending on the determined action. Thereby, control of the illumination by the ambient illumination device 16 depending on the user's action becomes possible.

  Each of the task lighting devices 20a to 20d further includes a microphone 32a, and transmits information on sound detected by the microphone 32a to the control unit 12. And the control part 12 will further contain the work area which the said task lighting apparatus illuminates depending on the received information, if the information of the sound detected with the microphone 32a is received from either of the task lighting apparatuses 20a-20d. The lighting state by the ambient lighting device 16 to the area is adjusted. Thereby, the lighting control by the ambient lighting device 16 depending on the user's action by voice recognition becomes possible.

  Further, the control unit 12 further detects the usage state of the information device used by the user, and depending on the detected usage state of the information device, the lighting state by the ambient lighting device 16 on the area including the user's work area Adjust. Thereby, the illumination control by the ambient lighting device 16 depending on the use state of the information equipment can be performed.

  As mentioned above, although the illumination system of this invention was demonstrated based on embodiment, this invention is not limited to this embodiment. Unless it deviates from the meaning of this invention, the form obtained by combining this embodiment with various modifications conceived by those skilled in the art and combinations obtained in different embodiments are also included in the scope of the present invention.

  For example, in the above-described embodiment, four task illumination devices 20a to 20c are installed in the work space, and the four illumination ranges 30a to 30d by the ambient illumination device 16 are provided. However, the number is limited to this number. Not. That is, the illumination range by the ambient illumination device 16 includes not only the illumination range corresponding to the task illumination device actually installed, but also the illumination range corresponding to the task illumination device that may be installed in the future. Also good. For example, the ambient lighting device 16 includes an ambient lighting light source 17 that can illuminate the entire floor of an installed room, and illuminates only the divided space in which the presence of the task lighting device can be recognized in units of a preset divided space. May be.

  Moreover, in the said embodiment, although the example in which the illumination state of task lighting apparatus 20a-20d was controlled by the control part 12 was demonstrated, such control is not necessarily essential for this invention. For example, in the example of controlling the lighting by the ambient lighting device 16 depending on the use state of the task lighting devices 20a to 20d, the lighting state of the ambient lighting device 16 is controlled, but the lighting state of the task lighting devices 20a to 20d is controlled. do not have to.

  Moreover, in the said embodiment, although all the task lighting apparatuses 20a-20d were provided with the same structure, the lighting system based on this invention does not need to be comprised from the task lighting apparatus of the same function. For example, a task lighting device that can be controlled by the control unit 12 and a task lighting device that cannot perform such lighting control may be mixed, or a task lighting device equipped with a microphone and a microphone may be installed. There may be no task lighting devices. This is because a task lighting device having a marker can control the lighting state of the ambient lighting device 16 depending on the installation position of the task lighting device.

  Moreover, although the illumination system 10 in the said embodiment was equipped with the one ambient illuminating device 16, you may be provided with several ambient illuminating devices. In that case, the same control as in the present embodiment can be performed by handling an assembly composed of a plurality of ambient lighting devices as one ambient lighting device 16 in the present embodiment.

DESCRIPTION OF SYMBOLS 10 Illumination system 12 Control part 14 Image pick-up part 16 Ambient illumination apparatus 17 Ambient illumination light source 20a-20d Task illumination apparatus 21a-21d Marker 22a-22d Operation part 23a-23d Task illumination light source 24a Lamp upper surface 25a-25d Desk 26a-26d Chair 27a ~ 27d User 28a ~ 28c LED
29a Light diffusion panel 30a-30d Illumination range 32a Microphone 35a Personal computer

Claims (10)

A plurality of task illumination devices that illuminate respective work areas of a plurality of users, each provided with a marker that is optically detectable from above;
An ambient lighting device that is installed above the plurality of task lighting devices and illuminates the entire space including the work areas of the plurality of users; and
An imaging unit that is installed above the plurality of task lighting devices and images a marker provided in the plurality of task lighting devices;
The plurality of task lighting devices, the ambient lighting device, and the imaging unit are connected via a communication path, and the image obtained by capturing the marker is acquired from the imaging unit via the communication path. And a controller that recognizes positions of the plurality of task lighting devices in the space and controls the ambient lighting device based on the recognized positions. The ambient lighting device has a light source that illuminates in an independent illumination state for each of a plurality of divided spaces obtained by dividing the space,
The said control part controls the said ambient illuminating device so that the work area illuminated by the said task illuminating device which could recognize the position based on the said image at least is illuminated by the said ambient illuminating device. Lighting system. The illumination system according to claim 2, wherein the illumination state is at least one of a light amount and a color temperature in illumination by the ambient illumination device to the divided space. The marker provided in the plurality of task lighting devices has an optically different aspect for each of the plurality of task lighting devices,
The control unit associates each of the plurality of task lighting devices with an aspect of a marker provided in the task lighting device, and identifies each of the plurality of task lighting devices and then the plurality of task lighting devices. The lighting system according to any one of claims 1 to 3, wherein each position of the device is recognized, and the control is performed based on the recognized positions of the plurality of task lighting devices. The illumination system according to claim 4, wherein the marker provided in each of the plurality of task illumination devices emits a color instructed by the control unit as the optically different aspect. The lighting system according to claim 5, wherein the marker provided in each of the plurality of task lighting devices includes a plurality of LEDs that emit different colors. Each of the plurality of task lighting devices transmits information indicating a usage state of the task lighting device to the control unit via the communication path,
When the control unit receives information indicating the use state from any of the plurality of task lighting devices, the ambient lighting to a region including a work area illuminated by the task lighting device depends on the received information The illumination system according to any one of claims 1 to 6, wherein an illumination state by the device is adjusted. The imaging unit further images at least one of the plurality of users,
The control unit further determines an action of the user included in an image acquired from the imaging unit, and adjusts an illumination state of the area including the user by the ambient lighting device depending on the determined action. Item 8. The illumination system according to any one of Items 1 to 7. Each of the plurality of task lighting devices further includes a microphone, and transmits information on sound detected by the microphone to the control unit,
When the control unit further receives information on the sound detected by the microphone from any of the plurality of task lighting devices, depending on the received information, the control unit moves to a region including a work area illuminated by the task lighting device. The lighting system according to any one of claims 1 to 8, wherein the lighting state of the ambient lighting device is adjusted. The control unit further detects a usage state of an information device used by at least one of the plurality of users, and depending on the detected usage state of the information device, the ambient to an area including the work area of the user The illumination system according to any one of claims 1 to 9, wherein an illumination state by the illumination device is adjusted.

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